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Posted to issues@drill.apache.org by "Rahul Challapalli (JIRA)" <ji...@apache.org> on 2015/02/09 04:39:35 UTC
[jira] [Created] (DRILL-2183) Flatten behavior not consistent with
rest of drill when we use it on a non-existent field
Rahul Challapalli created DRILL-2183:
----------------------------------------
Summary: Flatten behavior not consistent with rest of drill when we use it on a non-existent field
Key: DRILL-2183
URL: https://issues.apache.org/jira/browse/DRILL-2183
Project: Apache Drill
Issue Type: Bug
Components: Functions - Drill
Reporter: Rahul Challapalli
Assignee: Daniel Barclay (Drill/MapR)
git.commit.id.abbrev=c54bd6a
Projecting a non-existent column
{code}
0: jdbc:drill:schema=dfs_eea> select field_not_present from `data1.json`;
+-------------------+
| field_not_present |
+-------------------+
| null |
| null |
+-------------------+
{code}
Using a non existent column in a function :
{code}
0: jdbc:drill:schema=dfs_eea> select MAX(field_not_present) from `data1.json`;
+------------+
| EXPR$0 |
+------------+
| null |
+------------+
1 row selected (0.07 seconds)
{code}
Using a non-existent column in a filter
{code}
0: jdbc:drill:schema=dfs_eea> select MAX(uid) from `data1.json` where field_not_present > 1;
+------------+
| EXPR$0 |
+------------+
+------------+
{code}
However when we use flatten things work differently
{code}
0: jdbc:drill:schema=dfs_eea> select uid , flatten(field_not_present) from `data1.json`;
Query failed: RemoteRpcException: Failure while running fragment., org.apache.drill.exec.vector.NullableIntVector cannot be cast to org.apache.drill.exec.vector.RepeatedVector [ afe463ac-2523-43b2-882f-814ae4a116e1 on qa-node191.qa.lab:31010 ]
[ afe463ac-2523-43b2-882f-814ae4a116e1 on qa-node191.qa.lab:31010 ]
Error: exception while executing query: Failure while executing query. (state=,code=0)
{code}
Even if we do not make it consistent, we should at-least make the error message more clear
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